How to Hard Reset an Aastra 6757i/57i

by admin on March 20, 2012


I purchased a used Aastra 57i SIP phone from a seller on Amazon and, unfortunately, it was one of the very few whose admin password was NOT the default ’22222′.  The seller had purchased it in a bulk liquidation and didn’t have any of the details, so I was left to scour the web to figure out how to get the 57i back to a factory-fresh state.

Google came up with a rare zilch (most of the posts I found said to hit ’4′ & ’6′ or ‘*’ & ‘#’ during startup, but that didn’t work).  A call to a very helpful rep at Aastra solved the problem:

To hard reset an Aastra 57i or 6757i when you do not have access to the admin password, you’ll have to put the phone into its emergency ‘web recovery’ mode and reload the firmware from a TFTP, FTP or HTTP server.  Do the following:

  1. Disconnect the phone from any outside network and run an Ethernet cable from the ‘PC’ port on the phone directly to your machine.
  2. Boot up the phone in Web Recovery mode by holding down the ’1′ and ‘#’ keys during phone boot (hold the keys down and then plug in the power on the phone).
  3. Check the IP address on the screen of the phone, and set your computer’s IP address to something in the same subnet (for example, my Aastra gave itself an IP address of so I setup my machine to have
  4. Get a TFTP or FTP server running locally on your machine.  If you’ve got a Mac, Tfttserver is a good one.
  5. Put the latest firmware file on your local TFTP/FTP server.
  6. Point your browser at the IP address displayed on the phone and you should be greeted with the Web Recovery screen.
  7. Enter the location of the file and your TFTP/FTP server — *IMPORTANT – AND THIS DROVE ME NUTS:  Every time I tried to start the download in Chrome or Safari by clicking on the button at the bottom of the form, I got an “Invalid Parameters” error message.  I had to use Firefox and be sure to hit enter after typing the details instead of clicking on the submit button — that got the file to download.
  8. Voila — fresh new firmware in a full factory default state.

Hope this is helpful!


I was able to do this, but the passwrod didn’t reset to 22222. Did you have success? What version of the FW did you use?

by Craig Goodwin on June 13, 2012 at 1:24 pm. #

Yes, the password should go back to 22222 if you get a clear blank firmware install on the phone. I’m using, which is the latest stable Asterisk-usable firmware for that phone. Let me know how you make out.

by noahlh on June 13, 2012 at 2:42 pm. #

Thank you for this well written guide. The “Invalid Parameters” thing was driving me insane (i was hitting the download button). Clicking Enter instead of clicking the button did the trick. Aastra should be ashamed!

by Alen on January 7, 2013 at 12:45 pm. #

Hi there, can you also guide me because my aastra 51i screen says WEB RECOVERY AT: .. I am struck because I don’t see anyother response from phone. And this Ip address doesn’t pull anything on my laptop. If you have any information about how to get rid of this issue, please post it here or send me an email. Your help will be highly appreciated

by Dave on February 23, 2013 at 12:00 pm. #

Hi Dave – sounds like you may need to configure your laptop to be able to see the 192.168.1.* IP range. If your machine is currently setup with DHCP (as most are), you won’t be able to talk to the phone when it’s in recovery mode. You’ll have to manually set the “static IP address” on your laptop to something like and the subnet mask to Make sure you’re connected to the network via ethernet cable as once you do that your WiFi won’t work.

Good luck!

by noahlh on February 26, 2013 at 4:51 pm. #

Terrific guide. Thank you! I used this on an Aastra 6753i and I assume it would also work on the 53i.

by Jeff on May 16, 2013 at 9:44 pm. #

Successful ! Very useful guide. Thank you.

by Marian on June 4, 2013 at 8:40 am. #

Spend about 2 hrs trying to reset my 9480i CT, everything on instruction on point but do not use Apple to do it, it very confusing especially using Safari and Firefox. Use PC it faster and better. Thank you again!

by Charlie S. on June 21, 2013 at 4:36 pm. #

Great guide; Perfect instructions. I was able to bring 3 phones back online for our company. Thank You!

by Mona A on July 9, 2013 at 2:31 pm. #

All I get is “firmware download failed”…There is a “path” field that is confusing.

by Michael on July 30, 2013 at 3:27 pm. #

Try putting the .st file into the home directory of the user you’re logging in as, and leave the ‘path’ field blank.

by David Rodman on October 1, 2013 at 7:00 pm. #

This post is awesome. pure awesome. I was at the point of banging my head against something hard when I came across this post and saw the instructions for using Firefox, not Safari or Chrome, and then it worked perfectly. Thanks!

by Jeff on September 17, 2013 at 3:48 pm. #

Thanks, this was a real time saver!
@Michael: I found that the ‘path’ variable was not working properly. Just put the .st file in the home directory of the user you’re using to log in, and it works fine. (This is for FTP)

by David Rodman on October 1, 2013 at 6:59 pm. #

This article saved my life. I wrote an article of my own giving you the cred ( and added some of my own details.

by Tim Fernihough on November 21, 2013 at 4:50 pm. #

I kept putting the path in and getting a failure. Keep the path blank and just connect to the tftp server.

by Elliott on November 22, 2013 at 4:44 pm. #

This worked like a charm for me! I got a 6757i off eBay that was supposed to be factory new. While the phone was new, it apparently had been configured and put away.
Anyway, pumpkin was a little wonky at first. I was also using Internet explorer but I switched to Firefox and kept at it. After a successful firmware transfer, it takes several minutes for the phone to reboot. The first time I tried it I didn’t allow enough time and manually rebooted too early. Moral of the story: after a successful transfer, just let it sit there and do its thing! Thanks for all the tips.

by Dave J on December 3, 2013 at 11:49 pm. #

Thank you for the firefox tip, I was turning insane with safari. You saved my day.
A PoE switch turned bad and 6 Aastra phones were turned on and off, so they ended without firmware, and remained in the Web recovery mode.
I now remember to have met this web browser issue with another Aastra software OMM for SIP/DECT access point.
Shame on Aastra.

by Dangxian on December 4, 2013 at 8:23 am. #

Thanks for the article. I have de 6755i. I tried everything many times in TFTP and FTP but could get rid of the INVALID PARAMETERS message.

The ftp server is running fine (Filezilla, verified)
The tftp server is running fine (OpenTftp, verified)
Phone address :
PC address :
firmware, put in the root directory of the TFTP server and of the FTP server.
What I entered :


Filename :
TFTP Server :
TFTP Path : (blank)

Press Enter (don’t hit the button).

Same thing in the FTP fields, with the addition of the FTP User Name and FTP Password.

I disabled the Windows firewall
I am in Windows 7.
I use Firefox 26 and tried IE 9

I always get the INVALID PARAMETERS message.
Working on this for 4 hours.

Any idea of what can be wrong ?

by Dysmas on January 2, 2014 at 4:30 pm. #

Sorry for the typo in the first lines of my message. You should read :

I have a 6755i. I tried everything many times in TFTP and FTP but could not get rid of the INVALID PARAMETERS message.

by Dysmas on January 2, 2014 at 4:32 pm. #

Well, I succeeded but it was difficult.
The trick : It will NOT work with a modern browser (I was using Firefox 16). I had to reinstall an old Firefox 3.6. If you do that, be careful to backup your history, or you will loose it (file places.sqlite in your profile). Good idea to save the whole profile. Then things are a bit strange :

With the TFTP server running, the firmware in the tftp root, and all verified.

Try again, it will fail again.
Try the back button and you may get a 405 Error (method unsupported)

If you have this error you have won : click the reload button, and you will get the popup which warns that all parameters will be sent again, and all actions done again.
Click OK and the dowload will start.

The trick is to use a Firefox 3.6 and provoke this 405 error, then click the reload button, and click OK in the popup.

I have done this four times, it always worked in the same way.

Don’t ask me why it works, but it works (at least on my system) and I really enjoy this phone, it was worth the hours I spent to solve the problem (I got it on ebay and the vendor did not give the password).

by Dysmas on January 11, 2014 at 1:53 pm. #

Thanks so much for the update! Very helpful.

by noahlh on January 11, 2014 at 1:58 pm. #

Thanks a lot to every body
@Dysmas: i tried your method and i am having same error “firmware downlod failed”.
Don’t have the 405 error.
Seem to have UDP protocole problem but not sure
Any help will be appreciate.

by Kamarade on July 13, 2014 at 4:00 am. #

I fully recommand this doc witch had useful clues for me in the “Common Causes for “Download Failed” during Web Recovery” part, like : use de PC ethernet port instead of the LAN port

by Marc on July 29, 2014 at 3:00 pm. #